Check out Rock Arch 3D Model Low-poly 3D model on CGTrader for $20. High-quality mesh by InfiniteSolution3D: 9523 polys, 4787 vertices. PBR, Textured, UV Mapped.
STL (Stereolithography, filesize: 205 MB), OBJ (OBJ, filesize: 205 MB), ABC (Alembic, filesize: 205 MB), BLEND (Blender, filesize: 205 MB), DAE (Collada, filesize: 205 MB), FBX (Autodesk FBX, filesize: 205 MB), GLTF (glTF, filesize: 102 MB), PLY (Ply, filesize: 205 MB), 3DS (3D Studio, filesize: 102 MB), AC (AC3D , filesize: 102 MB), TEXTURES (Textures, filesize: 102 MB), USDZ (USDZ, filesize: 102 MB), USD (USD, filesize: 102 MB)